CDC2351QDBRG4

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The CDC2351QDBRG4 is a quad differential fanout buffer with clock and data skew minimization. Designed to meet the requirements of high-speed memory systems and communications applications, the CDC2351QDBRG4 features four independent, low-skew differential fanout buffers for distributing clock and data signals. It comes with an integrated input and output termination, thus minimizing the need for external components. This buffer is suitable for applications in high speed clock distribution, communications and memory systems.

Clock and data signals are often skewed due to differences in trace lengths, routing and other environmental factors. To minimize this skew, the CDC2351QDBRG4 uses on-chip delay lines, each of which compensates up to 4ps of delay within one of the four fanout buffer outputs. This not only minimizes the clock and data skew, but also improves system performance.

The CDC2351QDBRG4 also features an integrated input and output termination to ease the clock and data fanout. This simplifies PC board routing and minimizes the effects of trace length variation. Furthermore, the terminations reduce skews and ringing for improved system performance. The termination circuitry is enabled through TTL control pins, allowing the user to select either differential or single-ended termination.

The outputs of the CDC2351QDBRG4 are organized in a structure that ensures low-skew and matched clock-to-clock path delays. This ensures that all fanout clock outputs have equal length. In addition, the output of the buffer has a Tri-State capability that allows individual outputs to be disabled individually or in combination. This feature facilitates programming or debugging of boards or systems.

The CDC2351QDBRG4 can be employed in clock and data distribution applications such as memory systems, communications and networking, and quad port fan-out. It is best suited for FPGAs, ASICs, SoCs, and DSPs that require clocking and buffering of high-speed data paths. It comes in a small lead-free 64-pin QFN package and is designed to operate at a maximum temperature of 105 °C.

The CDC2351QDBRG4 is a perfect choice for any high-speed data system that requires low skew and matched clock-to-clock delays. Its integrated termination circuitry, enhanced Tri-State capability, and high-speed performance make it ideal for applications in high-speed clock and data distribution. Furthermore, its small size coupled with easy-to-use TTL control pins offer additional advantages in high-density system boards and networks.

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